There isn't a problem with conductivity per-se, the "problem" is is the ever increasing (or decreasing as the case may be) of lower and lower sub ohm coils, which are essentially a short in of them selves as they are getting such low ohm, which is creating extreme demands on mods mechanical switches something that everyone in vaping can attest to that didn't really exist, even a year ago. The spring is .023, so it can carry amperage. The switch is a dual ground design, the spring and friction ground (as are all mods who've adopted super t's switch design, which is pretty much all bottom button mods now use the design Super T pioneered, with the switch making direct contact with the battery and a dual ground design with friction of the button with the body/bottom cap and the spring).
These sub ohm coils require a very clean switch (see above by what I mean by clean) and I am no recommending those having warm button issues when running sub ohm coils to now run two interlaced springs to carry the high current demand .
I've never had any problems with mine. Granted, I know what I'm doing more than say the average vaping populous. I find it best to just use ELA and do only the maintenance necessary. And talk about never cleaning this mod.... here was a picture from a vape meet I went to last month. There's is only one shiny mod in the photo and its the one that's DIRTY! 
